Weft-h am m er for looms



WEFT HAMMER POR LOOMS.

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RALPH DERBYSHIRE AND CHARLES H. MULLEN, OF FALL RIVER,

MASSACHUSETTS.

WEFT-HAMMER FOR LOOMSl SPECIFICATION forming part of Letters Patent N o. 478,413, dated July 5, 1892.

' Application filed May 1l, 1891. Serial No. 392,386. (No model.)

To @ZZ whom it may concern:

Be it known that we, RALPH DERBYSHIRE and CHARLES H. MULLEN, both residents of Fall River, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Veft-Hammers forLooms; and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

Our invention relates to improvements in weft-hammers for looms, which strike the filllng-forks in case of failure or breakage of the weft-threads, whereby the operation of the machine is stopped.

As now ordinarily constructed, weft-hammers are generally made in one piece with the stop-levers which are connected with the stop mechanism,jand as they frequently wear or become untrue they fail to strike the fillingforks in the center, thus rendering it exceedingly difficult and laborious to properly adjust the same.

The object of our invention is to provide an improved construction of weft-hammers, whereby the same can be readily adjusted with respect to the filling-forks and slides, so that the operation of regulating the same is greatly facilitated in case they work untrue. In the constructions also in which the wefthammers and stop-levers are made in one piece it sometimes happensthat they become broken, thus rendering them entirely worthless. By constructing these parts according to our invention in case of the hammer becoming broken it can be readily replaced by another without removing the stop-lever from the machine.

The invention consists in the novel features of construction and new combination of parts hereinafter fully described, and detinitely pointed out in the claim.

In the accompanying drawings, Figure l represents a side elevation of a portion of a loom, showing our improvement applied thereto. Fig. 2 is a perspective View, on an enlarged scale, of the hammer detached. Fig. 3

is a detail sectional view showing the manner of adjustably connecting the hammer with the operating-lever.

In the said drawings the reference-numeral l designates the frame of the loom; 2, the stoplever pivoted thereto and provided with the usual connections whichactuate the shiftinglever to stop the machine. The numeral 3 denotes the lay-beam; 4, the lay-swords; 5, the filling-fork, and 7 the slide to which said fork is pivoted. The slide '7 is to. be connected with a shipper-lever, (not shown,) so that as the slide is moved or actuated by the wefthammer the lever will be unshipped, asis well understood. These parts may be of any ordinary or suitable construction and form no part of the present invention.

The numeral 6 designates the weft-hammer, which is made separate and distinct from the lever 2 and is adj ustably connected therewith, as hereinafter described. At its upper end the hammer is provided with a projection 7, which engages with the filling-fork and a rearwardly-extending head 8 to receive this hook when it falls and prevent the same from rebounding. At its lower end the hammer is provided with a foot 9, projecting outwardly from one side of the same. This foot is provided with a dovetailedv groove l0, forming ways to receive an arm l2, formed with the stop-lever and beveled upon its outer edges to conform with the groove in the foot 9, which is slidable or adj ustable thereon. The arm 12 is provided with van upwardly-projecting headed screw l5, which passes through aslot 16 in the foot 9, a washerl? beinginterposed Vbetween said foot and the angular head of the screw. y

The yoperation of the stop mechanism is similar to that of ordinary looms-that is to say, the weft-th reads engage with the tines of the filling-forks and tilt the same, so that the hooked ends will not engage with the oscillating hammer. In case of breakage or failure of the weft-thread then the filling-fork will not be tilted and the hook thereof will engage with the oscillating hammer, causing the slide to be actuated to unship the shipper-lever and stop the machine, as is well understood.

By our invention the hammer is laterally roo movable on the stop-lever, so that it can be adjusted s0 as to strike the filling-fork in the center, should it Work untrue, by loosening the screw l5 and sliding the hammer on the arm 12 until the proper position is attained, when the screw is again tightened. The hammer can also be readily replaced by :mother when damaged or broken. By means of the backwardly-extending head on the upper end of the hammer the filling-fork is prevented rebounding as it strikes and is stopped by said head in its descent.

Having thus described our invention, what we claim :is-

In a loom, the combination, with the weft RALPH DERBYSHIRE. CHARLES H. MULLEN Witnesses:

CHAS. S. MILLER, ARTHUR S. PHILLIPS. 

